Molder&#39;s tool.



Patented Jan. 12, 1909.

J. H. CASSON.

MOLDERS TOOL.

APPLIOATION FILED APB. 5. 1907.

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NETE STATS @ENT @Flill JAMES H. GASSON, OF DETROIT, MICHIGAN.

MOLDEBS TOL.

Application filed April 5, 1907.

To all whom it may concern.'

Be it known that l, JAMES H. Clisson, a citizen of the United States of America, residing at Detroit, in the county of Wayne and State of Michigan, have invented certain new and useful n'iprovements in Molders Tools, of wnich the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to an improved tool for melders use in removing patterns from the sand and the object of the invention is to provide a suitable tool for the purpose which is simple, cheap and eiiicient in its operation adapted for use in removing both wood and metal patterns.

Itis also an object of the invention to provide such a tool with an operating handle which is so constructed as to adapt the device to be used as a hammer for rapping the patterns to loosen the same in the sand, and to provide a device having the several advantages of the particular construction, arrange ment and combination of parts, all as hereinafter more fully described reference being had to the accompanying drawings in which- Figure l is a side elevation of a device embodying the invention; Fig. 2 a similar view of the modified form of spike, detached, and Fig. 3 a section through another modification.

As shown in the drawing, l is a cylindrical shaped member having a long tapering conical point 2, forming a spike the sharp pointed end of which is adapted to be driven a short distance into a wooden pattern which it is desired to remove-from the sand in the process of forming a mold fr casting a metal article, Secured to the end of this spike in any suitable manner, as by a pin 3, is an externally screw threaded stem @if formed at its free end with a T-head or handle 5 of a size and shape to be conveniently grasped in the hand to lift the spike where the same has been driven into a pattern and also of a form and weight to adapt the tool to be used by the molder as a hammer for rapping the pattern to loosen it in the sand.

To lift a metal pattern or one into which it is not desirable to drive the spike, spring fingers 6 adapted to be inserted in a hole in the pattern, are provided. These ngers eX- tend longitudinally of the spike and lie closely against the sides thereof, tapering Specification of Letters Patent.

Patented Jan. 12, 1909.

Serial No. 366,560.

toward the point of the spike where each is provided with an outwardly projecting shoulder 7 forming a head. At their opposite ends the fingers are united by a block S having a screwethreaded opening to receive the screw stem i so that by turning said stem relatively to the fingers the spike is moved longitudinally, projecting the same outward between the fingers and forcing them apart or retracting the spike to lie wholly between the iingers. When the spike is so retracted, the free ends of the ngers lie closely together against the tapering point of the spike and may be inserted in a small hole in the pattern and the stem then turned to project the spike, the conical end of which acts as a wedge to force the fingers apart and bind the same in the hole in the pattern, the shoulders or head of the fingers engaging the sides of the hole or when projected through lthe pattern they engage the underside thereof to prevent the fingers from slipping out when the operator lifts on the handle to withdraw the pattern from the sand. `When the handle is turned to move the spike inward between the fingers, said fingers by this spring action engage the side of the conical end of the spike closely and move toward eachother, disengaging their shoulders from the pattern and permitting the removal of the tool from .the hole in the pattern.

lVhen the spike is to be used to remove a wooden pattern .from the sand, the handle is turned to project the sharp point of the spike beyond the ends of the fingers and is then attached to the pattern to lift the same by driving this sharp point into the wood. lt is evident however that the spring finger may be omitted if so desired, and, when a hole is provided in the pattern, the spike may be driven into the hole, its tapered end wedging therein firmly enough to .lift thel pattern.

in Fig. 2 is shown a spike formed at its eXtreme point 9 with a wood-screw thread so that in removing wood patterns the point may be screwed into the pattern instead of being driven in, the spike being turned by means of the handle and the fingers permitted to turn with the spike so that their position relative to the spike will not be vchanged by such turning.

`Wnen the tool is to be used exclusively in handling large heavy metal patterns,` the sharp point of the spike may be left off,

it being cut oi midway between the base and the apex of the conical portion so that when the spike, which would then serve simply as a wedge to spread the ingers, is projected, the pointed end would not eX- tend beyond the ends of the fingers and into the sand.

in Fig. 3, another modification is shown in which the spike is made in halves l1 secured together by a screw 12 and provided at its lower end with a socket 18 for the head of an ordinary wood screw 14 so that the screw can be renewed as it becomes worn thus not necessitating the purchase of an entire new spike.

Having thus fully described the invention what I claim isl. ln a inolders tool, the combination of a cylindrical member having a conical end, spring lingers adapted to engage the sides of the conical end and having shoulders at their lower ends, a block connecting said fingers at their upper end and having a screw-threaded opening, a threaded stem on the cylindrical member engaging said opening and a T handle on the end of the stern.

2. In a molders tool, the combination of a two-part member having a conical end and mating pockets therein adapted to receive a common screw, means for removably securing the two parts together, spring lingers connected at their upper ends adapted to engage the sides of the conical end and having shoulders at their lower ends, a threaded stem on the two-part member engaging a threaded opening on the linger portion and adapted to move the parts in relation to each other and a handle on the stem.

In testimony whereof I aiiix my signature in presence of two witnesses.

JAMES H. CASSON. lVitnesses:

OTTO F. BARTHEL, ANNA M. Donn. 

